Numerical simulation of phase-focused wave group interaction with an FPSO-shaped body
Numerical simulation of phase-focused wave group interaction with an FPSO-shaped body
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发表时间：
2018-07
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通讯作者：
Hao Chen;L. Qian;Zhihua Ma;D. Causon;C. Mingham
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作者：
Hao Chen;L. Qian;Zhihua Ma;D. Causon;C. Mingham
国际海洋与极地工程师学会(ISOPE)版权所有2018年本论文总结了单向相位聚焦波群中固定式FPSO形状物体的数值模拟结果，该结果是为第28届国际海洋与极地工程会议(ISOPE 2018)上CCP-WSI关于聚焦波对固定式FPSO影响的盲测研讨会准备的简短报告。利用开源工具箱OpenFOAM进行了数值模拟。采用重叠网格法，生成背景网格和重叠贴体网格两层网格。入射聚焦波群首先在几个位置与实验数据进行了验证。随着波浪的传播，发现数值模型产生的波浪由于数值扩散而略有耗散。因此，从数值模式中预测了较小的波峰。然后在相同的波浪条件下，将浮式生产储油船结构就位进行了数值模拟。报告了基于验证标准的几个位置的表面高程和压力。
Copyright © 2018 by the International Society of Offshore and Polar Engineers (ISOPE) The present paper summarizes the results for numerical simulation of a fixed FPSO-shaped body in uni-directional phase-focused wave groups, which is prepared as a short report for the CCP-WSI Blind Test Workshop on Focused Wave Impact on a Fixed FPSO at the 28th International Ocean and Polar Engineering Conference (ISOPE 2018). The numerical simulations were carried out using the open source toolbox OpenFOAM. An overset mesh method was applied, where two layers of mesh were generated, namely the background mesh and the overlapping body-fitted mesh. The incident focused wave groups were first validated against the experimental data at several positions. With the propagation of the waves, it was found that the waves generated by the numerical model were slightly dissipated due to numerical diffusion. Therefore, smaller wave crest was predicted from the numerical model. Then the simulations were conducted for the same wave conditions with the FPSO structure in place. The surface elevation and the pressure at several locations based on the validation criteria are reported.